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Join Date: Aug 2024
Location: NY
Posts: 110
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Fixing Crumbling Floor Mat Under Coating Insulation.. stuff
I have searched around and its a bit difficult to pinpoint other threads asking similar question, but what has the community come up with for a decent repair to under-side of floor mats?
In one interesting thread someone painted the backside with flex seal.  The other mats seem good, but the driver side has had a tough life. tia
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1983 911SC - Helibronze Metallic L966 |
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11-01-2024, 09:01 AM
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Your challenge there is the "horse hair" insulation used as a backing; much of yours is missing. I used Flex Seal on the underside of my rear mats, and it worked pretty well (used a few coats). I had to replace my fronts, though...
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'87 Carrera (3.4L) w/Turbo, full-bay IC; front bumper aux oil cooler, etc. '07 Boxter |
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11-01-2024, 10:03 AM
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Join Date: Dec 2019
Location: Central Ma.
Posts: 33
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Used brush on clear flexseal as well with good results but mine had just begun to degrade. Also had similar issue with 43 year old sisal mats and flexseal worked on them too. Unfortunately my boat sunk.😁
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11-01-2024, 04:20 PM
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Old, that’s funny
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11-01-2024, 05:25 PM
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PCA Member since 1988
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When they get like that, I replace them.
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1973.5 911T with RoW 1980 SC CIS stroked to 3.2, 10:1 Mahle Sport p/c's, TBC exhaust ports, M1 cams, SSI's. RSR bushings & adj spring plates, Koni Sports, 21/26mm T-bars, stock swaybars, 16x7 Fuchs w Michelin Pilot Sport A/S 3+, 205/55-16 at all 4 corners. Cars are for driving. If you want art, get something you can hang on the wall! |
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11-01-2024, 05:56 PM
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Join Date: Oct 2024
Posts: 35
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maybe spray adhesive + felt or similar?
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11-01-2024, 06:30 PM
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Resurrecting old thread -
Mine are not as bad as the OP's, but with the wear in the middle, the mat tends to bunch up under my feet while I'm driving. Will Flexseal just go over all of this, or do I need try and strip the existing rubber off? Is there anything to add to make it stiffer or hold together better? Thanks!  
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1986 Carrera 3.2 Coupe in Grand Prix White IG: @c.cal.porsche |
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11-03-2025, 10:39 PM
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Quote:
Its not pretty.... but I laid down strips of Dry Wall mesh tape (I've been patching a lot of holes lately - had a roll laying around) - and put a couple coats of Flex Seal down... added a bit of weight to the mat, but fixed up the parts of rubber that were peeling away... should hold up for a while - lot cheaper than new mats... 
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1986 Carrera 3.2 Coupe in Grand Prix White IG: @c.cal.porsche |
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11-11-2025, 07:50 PM
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I covered with strips of duct tape.
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1984 911 Carrera Coupe - 32C #73 - M64/05 1998 E36 M3 4dr 2006 Sienna 5dr - the hauler 2004 Lexus GX470 2010 Cannondale Caffeine II - Lefty |
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11-11-2025, 08:51 PM
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